Agricultural boiler



(No Model.)

I. SHOUDY, JI'., 8v. L. L. MILLER.

AGRICULTURAL BOILER.

No. 407,497. Patented July 23, 1889.

W. Wahinwn. n. c.

UNTTED STATES PATENT ()EEIcE.

ISRAEL Sl-IOUDY, JR, AND LUTHER L. MILLER, OF PAW PAWV, ILLINOIS.

AGRICULTURAL BOILER.

SPECIFICATION forming part of Letters Patent No. 407,497, dated July 23, 1889.

Application filed January 31, 1888- $erial No. 262,538. (No model.)

To all whom it may concern:

Be it known that we, ISRAEL SHOUDY, J r., and LUTHER L. MILLER, citizens of the United States, and residing at Paw Paw, in the county of Lee and State of Illinois, have invented certain new and usefulImprovements in Agricultural Boilers, of which the following is a specification.

The object of this invention is to rapidly heat water or other fluid substance required for farm or like purposes.

It consists of a receptacle to contain the substance to be heated, and a removable furnace, of the construction represented in the drawings, to be placed or suspended within the receptacle, all of which is shown in the drawings, and will be hereinafter more particularly described and claimed.

In the drawings, Figure 1 is a vertical central section on dotted line a of plan view,

Fig. 3, in which the upper portion of the re ceptacle is shown full. Fig. 2 is a central vertical section on dotted line b of plan view, Fig. 3. Fig. 3 is a plan view with the cover removed. Fig. 4 is an isometrical representation of the circulating-coil connected with the furnace, to communicate with the con-' tents of the receptacle. Fig. 5 is an isom etrical representation of the fire-grate.

The receptacle 1, to contain the substance to be heated, in this instance is of cylindrical form, with bottom 2, and removable lid 3. lVithin this receptacle a furnace consisting of a cylindrical outer casing 4 is suspended by means of arms 5, projecting laterally from its upper edge, and of suitable dimensions to enter grooves or slots formed in the upper end of the receptacle for their reception. These arms project beyond the walls of the recep tacle and form handles, by means of which the furnace maybe lifted from the receptacle.

The base portion of the furnace consists of a base-flue 6,beneat-h a division-wall 7 ,which forms the base-support to the ash-pan S,which connects on opposite sides of the furnace with vertical diving-flue 9 and a vertical smokeflue 10, which rises through the cover 3 of the receptacle. These fines are formed by the vertical walls 11 and 12, rising from the ash-pan support 7 on opposite sides.

The vertical wall 12 is fitted with a valve or damper 13, hinge-jointed at its lower edge I to the vertical wall 12, and its upper end is provided .Witha rod 14, by which it is operated, to open or close the opening 15 in the vertical wall.

Vertical induct-ion air-fines 16 are placed on the outer side of the vertical wall 12, within the smoke-flue 10, and their lower ends 17 communicate with the furnace immediately under the fire-grate, the upper ends of these fiues communicating with the external air on opposite sides of the smoke-flue.

A removable grate 18, of any suitableconstruction, substantially as shown at Fig. 5 and mainlyin dotted lines in Fig. 3, is supported within the furnace-casing above the ash-pan on brackets or stud-supports 19, projecting from the inner face of the casing.

A fuel-reservoir with an inclined side 20 and inclined curved ends 21, to engage the inner walls of the furnace, is removably supported on hook-brackets 22, projecting from the inner face of the furnace-wall, which receive the downward hook projections 23 of the fuel-reservoir to support it suspended within the furnace over the fire-grate.

A circulating-coil has its lower open end 24 communicating with the contents of the receptacle and consisting of theseveral coils 25, supported within the base-flue 6, immediately under the division-wall 7, from which it rises above the fire-grate and is passed to the inner face of the furnace-wall, where it is provided with a series of horizontal coils 25, fixed to the inner face of the furnace-wall 11, from which its free end extends through the outer furnace-wall to communicate With the receptacle.

In use, the substance to be heated is placed within the receptacle. The furnace is then suspended within the receptacle. A fire is then kindled on the tire-grate, and the damper opened to the position shown in dotted lines, Fig. 1, to provide a direct draft.

The fuel-reservoir is then put in place, as

7 shown in Fig. 1, and the fuel is placed therein to any desired amount. The cover is then placed upon the receptacle, and when the fire is well started the damper is closed, as shown in its solid-line position, Fig. 1, which will cause the heated air created by combustion to flow in the direction indicated by the larger arrows and to pass in contact with the circulating-coil, down the diving-flue, under the ash-pan, and escape through the smoke- By this construction and arrangement of the parts it will be seen that the heated air produced by the combustion of the fuel in its passage to the smoke-flue will heat the bottom of the furnace and consequently the substance in contact therewith, and by reason of the circulating-coil placed within the furnace, its lower end extending into the substance to be heated near the bottom of the receptacle and its upper end communicating with the substance of the receptacle near the surface of the substance, as the coil becomes heated the colder substance will be taken in at the lower end and discharged at its upper end, thereby causing a current of the substance to circulate through the coil, and consequently more quickly heat the contents of the receptacle.

\Ve claim as our invention 1. The combination, in an agricultural boiler, of a furnace and a suitable receptacle to contain the substance to be heated, said furnace consisting of a fire-chamber, a firegrate, an air-flue communicating with the fire-chamber through the fire-grate to support combustion, a smoke-flue, a diving-flue, and a base-flue to connect the diving-flue and smoke-flue, substantially as set forth.

2. The combination, in an agricultural boiler, of a furnace and a suitable receptacle to contain the substance to be heated, said furnace consisting of a fire-chamber, a firegrate, an air-flue communicating with the firechamber through the fire-grate to support combustion, a smoke-flue, a diving-flue, and a base-flue passing under the ash-pan and connecting the diving-flue and the smokeflue, substantially as set forth.

3. In an agricultural boiler, the combination, with a suitable receptacle adapted to contain the substance to be heated, of the outer casing suspended within said receptacle, the fire-pot within said casing, the reservoir suspended within the casing above the fire-pot, and a circulating-coil having its lower section arranged beneath said fire-pot, its intermediate portion extending upward against the exterior side thereof and its upper section arranged within the fire-pot, the said coil communicating at each end with the said receptacle, substantially as set forth.

4. In an agricultural boiler, the combination, with a receptacle adapted to contain the substance to be heated, of an outer casing supported therein and provided with an opening in one of its walls, a fire-pot provided with a closed bottom, a grate supported therein, a damper for opening and closing said opening, the suspended reservoir, the diving-flue, the base-flue, the smoke-flue, the air-supply flues extending vertically within the smoke-fines and communicating at their lower ends with the fire-pot and at their upper ends with the open air, and a circulating-coil in communication with the said receptacle.

ISRAEL SIIOUDY, JR. LUTHER L. MILLER. Witnesses:

'l. A. COFFEY, C. F. PRESTON. 

